Supertech now offers a performance dual & single valve spring and retainer kits for popular Honda / Acura engine applications.

Most offered kits (unless otherwise specified) include 32 total valve springs and 16 titanium or aluminum retainers and may include spring seats (depending on engine application). 

Supertech 16/32pc Single/Dual Valve Springs:
Supertech performance valve springs are made with premium Superclean Chrome Silicon Vanadium Steel Alloy for higher performance and durability. Computer designed to ensure that wire stress levels do not overpass the limits for long durability under extreme conditions and harmonics are well under control.

Supertech 16pc Titanium Retainers
Supertech titanium retainers prevent valve float and strength up your valvetrain. Retainers are CNC machined from 6AL4V grade titanium.

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Valve spring & retainer kit specs - reference part number below and select your choice via 'Kit Options' in pull down menu.

02-06 RSX Type-S (K20A2/K20Z1), 06-11 Civic Si (K20Z3), 04-08 TSX (K24A2), 09-14 TSX (K24Z3):

• SPRK-H1019D - Dual Valve Spring [email protected] SPR-1019D+RET-K20A2/T2+SEAT-H1020DS. Max lift:17.70mm. Coil bind: 22.70mm. Rate: 14.8lbs/mm.
• SPRK-H1021D - Dual Valve Spring [email protected] SPR-1021D+RET-K20A2/T2+SEAT-H1020DS. Max lift:17.70mm. Coil bind: 22.70mm. Rate:13.20lbs/mm.
• SPRK-H1022D - Dual Valve Spring [email protected] SPR-1022D+RET-K20A2/T2+SEAT-H1020DS. Max lift:18.30mm. Coil bind: 22.00mm. Rate:11.20lbs/mm. 

02-05 Civic Si/02-06 RSX Base (K20A3) / 03-07 Accord (K24A3):

• SPRK-M1007D/K2 - Dual Valve Spring [email protected] SPR-M1007D+RET-K20A3/T1+SEAT-HKA3. Max lift:15.10mm. Coil bind: 24.70mm. Rate: 13lbs/mm.
• SPRK-M1007S/K2 - Single Valve Spring 74lbs@ 39.8mm SPR-M1007S+RET-K20A3/T1

12-15 Civic Si (K24Z7):

• SPRK-H1000D-Z7 - Dual Valve Spring [email protected] SPR-H1000D-Z7+RET-K24ZT/T1+SEAT-H1020DS+KPR-5.5/7A-ST. Max lift:15.70mm. Coil bind: 20.70mm. Rate: 11.50lbs/mm.
• SPRK-H1005D-Z7 - Dual Valve Spring [email protected] SPR-H1005D+RET-K24Z7/T1+SEAT-H1020DS+KPR-5.5/7A-ST. Max lift:15.70mm. Coil bind: 20.70mm. Rate: 11.50lbs/mm.
• SPRK-H100DR-Z7 - Dual Valve Spring [email protected] SPR-H100DR+RET-K24Z7/T1+SEAT-H1020DS+SS-3011-3+KPR-5.5/7A-ST. Max lift:14.90mm. Coil bind: 18.50mm. Rate: 12.50lbs/mm.